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AM2634: 系统时钟的频率是固定的吗?如何配置PLL生成各个外设的时钟?

Part Number: AM2634
Other Parts Discussed in Thread: SYSCONFIG

使用EPWM模块的例程在CC板上进行调试,测量PWM频率反推EPWM时钟是200MHZ,但在sysconfig里配置的WUCPUCLK是25MHZ,是如何倍频的?在芯片手册上看到AM263的时钟都是几种固定频率的选项,例如25MHZ,200MHZ , 400MHZ等等,与C2000配置PLL生成SYSCLK有很大区别。手册里没有对SYSCLK进行描述。